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Finding the Fourth Proportional to 411,011.64, 616,514.58 and 211,387.68

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Solution

The fourth proportional to 411,011.64, 616,514.58 and 211,387.68 is: 317,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,011.64 : 616,514.58 = 211,387.68 : x
  2. Step 2: Convert to fraction form
    411,011.64/616,514.58 = 211,387.68/x
  3. Step 3: Cross multiply
    411,011.64x = 616,514.58 × 211,387.68
  4. Step 4: Simplify right side
    411,011.64x = 130,323,586,752.37
  5. Step 5: Solve for x
    x = 130,323,586,752.37/411,011.64
  6. Step 6: Final answer
    x = 317,080.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.